Hoover - I’ve done IMWI 3X and ridden the course about umpteen times, so I’ll take a whack at answering your questions…
The helix & transitions - the helix is no big thing. You’ll run up the east side coming out of the swim - let the wetsuit strippers at the bottom do their thing and take ‘er easy up the corkscrew. It’ll be lined with people and it’s a real rush, so enjoy it. Transition is inside the Terrace and will be staffed by some of the best volunteers around. On the way out, you’ll have to run your bike to the west end of the upper deck before you can saddle up - then, roll EZ down the other helix - too many yahoos try to get up to speed on the helix which is stupid and dangerous - it’s the first 200 meters of an ironman for pete’s sake. T2 is back inside the Terrace in the same room. The helix is no big thing at the end of the bike - you can sit n’ spin up it pretty easily. You’ll ride about 100 meters across the flat to the dismount line where the volunteers will take your bike and direct you to transition inside.
Restaurants - tons to choose from, and all are within walking distance from the Capitol square.
Course recon - don’t know about driving it, as I haven’t. If you’ve never seen it in person, just remember that it’s much harder on a bike than in a car (not to freak you out or anything). The most dangerous spot is the left hand turn at the bottom of Timber Lane. Pretty easy to exceed 45 mph there and it’s a tight turn so mind your brakes. The other spot to go EZ is the top of Garfoot Rd. - twisty and fast - roads are open, so stay right of center through the blind corners. The Garfoot descent is an excellent place for a nature break if you can do it in motion - you gotta be going EZ anyway, so why not. If you prefer to stop and dismount, there’s a nice wooded flat section at the bottom of Garfoot that’s a likely spot.
The swim - Gatorade hosts an open swim on the course every a.m., although I’m not sure if it starts Wed. or Thurs. Gear check and Gatorade available - don’t miss it, as it’ll give you an outlet for all that energy and get you ready for breakfast.
Can’t comment on airport logistics, as I’m in N. IL so I’ll be driving up Thursday.
For spectators - the Terrace for the swim. After that, they can catch a free shuttle out to Verona on the bike course - they’ll have a town festival going on in the park and the course comes through town 2X. After that, catch the shuttle back to Madison and hang around the Capitol square - lots of diversions within a short walk, and race central for the rest of the day. On the north side, opposite the Terrace is State St. - part of the run course and lined with cool restaurants/shops.
Can’t help with parking…sorry 'bout that.
As far as tips, the biggest one I can offer is this: pace yourself on the bike. Seems that you haven’t had an opportunity to ride the course yet. It’s tough. Lots of rollers and false flats and not much opportunity to get in the aeros and get in a groove. Better to err on the side of caution, especially on the first loop. Save a little for the trip back to town also, as there’s a couple of little climbs that can hurt if you’ve ridden too hard.
Hope the above is some help. Safe travels, and perhaps I’ll see ya in a few weeks.
Mike